Topic: 1977 CB550 Carb Rebuild

[Simpson]

Can someone tell give me some advice?

1.) Where can I get NOS rebuild kits for a 1977 CB550 (need slow jets badly). Don't say Honda without providing a link because nobody seems to have them.

or

2.) Who would you suggest as a good 1977 CB550 after market like Keyster. Link appreciated also...

Thanks for your help...

[Frostyboy]

I'm not sure what style of carbs you have, PD's or like what mine has.
I think idle jets on the PD style are push in? I could be wrong there. Mine has screw in idles.
However, http://forums.sohc4.net/index.php?topic=743.0 lists all the resources you should need. Scroll down until you find Carb rebuilds & kits.

[underachiever]

If it has the same carbs as my 77 550k, then they're PD46A's, and yes the slow jets push in. Mine are 42's but I have read that not all 77's came with those. Somewhere on here there is a chart (maybe carb faq?) that lists which jets are supposed to be in various carbs.

I don't know where to get NOS rebuild kits for sure, but you might try david silver spares, though I'm not sure I've seen them while browsing. Western hills honda (I think) seems to be well thought of for hard to find stuff.

As for the Keysters there are mixed feelings but I've never used them, I just refreshed the existing parts (and it seems to have eventually stopped weeping fuel from various places on the carbs  ). However if you want to go with the keysters I know www.siriusconinc.com either has them or can get them. They are local for me (and the only shop around where old bikes are seen as more than a novelty) and I have been in and talked to them about parts for those specific carbs before.

tony

[TwoTired]

77 Cb550Ks have very different carbs than the 77 Cb550F.

Sometimes, you have to give information to get information.

I've read threads that referenced an outfit in Canada, that had kits.

Anyway, all you should need is the rubber bits.  The metal parts are all clean-able and likely have dimensions that meet required specs. for correct operation.  No guarantee with aftermarket.  That's why they're cheap.

Cheers,

[Simpson]

77 Cb550Ks have very different carbs than the 77 Cb550F.

Sometimes, you have to give information to get information.

I've read threads that referenced an outfit in Canada, that had kits.

Anyway, all you should need is the rubber bits.  The metal parts are all clean-able and likely have dimensions that meet required specs. for correct operation.  No guarantee with aftermarket.  That's why they're cheap.

Cheers,

Sorry, I forgot about the F model.
I/m referring to the K model, this carb has the push-in #42 slow jets.
Everything could be fixed but the slow jets. They are slam shut. I tried to fix them but no luck.
Nothing like Honda original parts.

[Simpson]

There are these suckers... I haven/t had great luck with after market.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=380277638563&viewitem=&sspagename=STRK%3AMEWAX%3AIT

[TwoTired]

I/m referring to the K model, this carb has the push-in #42 slow jets.
Everything could be fixed but the slow jets. They are slam shut. I tried to fix them but no luck.

Don't give up yet.
0.42 mm = 0.016535 "

So, find a wire smaller than that, (hopefully softer than brass) and poke out the sludge.  If you are very careful, a high E Guitar string is only .010 or .009 " and can clear the slow jet, I try to round over the pointy end so as not to scratch the jet orifice nozzle, when a steel string is necessary.

Cheers,

[Simpson]

I/m referring to the K model, this carb has the push-in #42 slow jets.
Everything could be fixed but the slow jets. They are slam shut. I tried to fix them but no luck.

Don't give up yet.
0.42 mm = 0.016535 "

So, find a wire smaller than that, (hopefully softer than brass) and poke out the sludge.  If you are very careful, a high E Guitar string is only .010 or .009 " and can clear the slow jet, I try to round over the pointy end so as not to scratch the jet orifice nozzle, when a steel string is necessary.

Cheers,

TT

I considered making a new thread to make a special thanks for encouragement.

Your absolutely right.

Little experimentation led to completely refurbished and FUNCTIONAL slow jets.

My friends 1977 550K purrs like a kitten!!!!

Now all the other parts of the throttle position are FUBAR but he's got some crazy custom muffler and pods.

Next to convince him to go back stock.    

Thanks again!

[TwoTired]

Cool.
Glad you got it sorted.  Well done!

Cheers,

[Simpson]

TT
Took his pods off. Cleaned up the air filter and assembly.

Installed it, made some fine adjustments to the carbs...

Wahhhlaaa

Runs sweet in the garage now. Idles good and revs smooth.

Imagine that...

[minimo]

This video takes you through a complete cleaning/replacement etc for a 1975 Honda CB-550 (F or K model not specified).
Carburetor Cleaning and Repair